<template>
  <view>
    <!-- 搜索区域 -->
    <my-search ></my-search>
    <view class="scroll-view-container">
      <!-- 左侧 -->
      <scroll-view class="left-scroll-box" scroll-y="true" :style="{height:wh+'px'}">
        <block v-for="(item,i) in catelist" :key="i" >
          <view :class="['left-scroll-item',active===i?'active':'']" @click="activeChange(i)">{{item.cat_name}}</view>
          </block>
      </scroll-view>
      <!-- 右侧 -->
      <scroll-view class="right-scroll-box" scroll-y="true" :style="{height:wh+'px'}" :scroll-top="scrollTop">
        <view class="cate-lv2" v-for="(item2,i2) in catelevel2" :key="i2">
          <!-- 标题区域 -->
          <view class="cate-lv2-title">
            /{{item2.cat_name}}/
          </view>
          <!-- 图片区域 -->
          <view class="cate-lv2-list">
            <view class="cate-lv2-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodList(item3)">
              <image :src="item3.cat_icon.replace('dev','web')"></image>
              <text>{{item3.cat_name}}</text>
            </view>
          </view>
        </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
  import badgeMix from '@/mixin/tabbar-badge.js'
  export default {
    mixins:[badgeMix],
    data() {
      return {
        wh:0,
        catelist:[],
        active:0,
        catelevel2:[],
        scrollTop:0
      };
    },
    onLoad(){
      const phone=uni.getSystemInfoSync()
      this.wh=phone.windowHeight
      this.getCateList()
    },
    methods:{
      async getCateList() {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/categories')
        if (res.meta.status !== 200) return uni.$showMsg()
        this.catelist = res.message
        this.catelevel2=res.message[0].children
      },
      activeChange(i){
        this.active=i
        this.catelevel2=this.catelist[i].children
        this.scrollTop=this.scrollTop===0?1:0
      },
      gotoGoodList(item){
        uni.navigateTo({
          url:"/subpkg/goods_list/goods_list?query="+item.cat_name
        })
      }
    }
  }
</script>

<style lang="scss">
.scroll-view-container{
  display: flex;
 .left-scroll-box{
   width: 120px;
   
   .left-scroll-item{
     background-color: #efefef;
     line-height: 60px;
     text-align: center;
     font-size: 12px;
     
     &.active{
       background-color: #fff;
       // border-top: 1px solid #d0d0d0;
       // border-bottom: 1px solid #d0d0d0;
       position: relative;
       &::before{
         content: "";
         display: block;
         width: 3px;
         height: 30px;
         background-color: #c00;
         position: absolute;
         top: 50%;
         left: 0;
         transform: translateY(-50%);
       }
     }
   }
 } 
 .right-scroll-box{
   background-color: #fff;
 }
}
.cate-lv2-title{
  text-align: center;
  font-weight: bold;
  font-size: 12px;
  padding: 15px 0;
}
.cate-lv2-list{
  display: flex;
  flex-wrap: wrap;
  .cate-lv2-item{
    display: flex;
    flex-direction: column;
    width: 33.33%;
    justify-content: center;
    margin-bottom: 10px;
    align-items: center;
    image{
      width: 60px;
      height: 60px;
    }
    text{
      font-size: 12px;
    }
  }
}
</style>
